WO2023092694A1 - 显示面板的补偿方法及补偿装置 - Google Patents

显示面板的补偿方法及补偿装置 Download PDF

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Publication number
WO2023092694A1
WO2023092694A1 PCT/CN2021/137086 CN2021137086W WO2023092694A1 WO 2023092694 A1 WO2023092694 A1 WO 2023092694A1 CN 2021137086 W CN2021137086 W CN 2021137086W WO 2023092694 A1 WO2023092694 A1 WO 2023092694A1
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Prior art keywords
pixel
sub
thin film
film transistor
display panel
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PCT/CN2021/137086
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English (en)
French (fr)
Inventor
何伟
Original Assignee
惠州华星光电显示有限公司
深圳市华星光电半导体显示技术有限公司
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Application filed by 惠州华星光电显示有限公司, 深圳市华星光电半导体显示技术有限公司 filed Critical 惠州华星光电显示有限公司
Priority to US17/620,870 priority Critical patent/US12008931B2/en
Publication of WO2023092694A1 publication Critical patent/WO2023092694A1/zh

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2074—Display of intermediate tones using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/045—Compensation of drifts in the characteristics of light emitting or modulating elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/08—Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/10—Dealing with defective pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof

Definitions

  • the present application relates to the field of display technology, in particular to a compensation method and a compensation device for a display panel.
  • OLED Organic Light-Emitting Diodes
  • OLED Light-Emitting Diode
  • an OLED display outputs current to the OLED through a driving transistor in a pixel driving circuit in each pixel, so as to drive the OLED to emit light. Due to the inconsistent electrical characteristics of the driving transistors in the OLED display, there are brightness differences between pixel units.
  • an external compensation method is proposed in the prior art. By compensating the threshold voltage of the driving transistor corresponding to each sub-pixel, a corrected driving voltage is generated. Ensure the consistency of the content displayed on the OLED display.
  • multiple sub-pixels with different light emitting colors share a set of detection and compensation circuits.
  • a sub-pixel When a sub-pixel is defective due to the thin-film transistor process or the organic light-emitting layer process, it will affect the detection of the threshold voltage of the surrounding sub-pixels that share the detection circuit, causing the surrounding pixels to become bright or dark after being detected and compensated by the module. Points, thus forming point defects of bright and dark connections, which exceed the customer acceptance standard, must be repaired by laser and then compensated again, which is a waste of module repair and compensation production capacity, and affects the pass-through rate of modules.
  • the current display panel has a technical problem of point defects forming bright and dark connections during the voltage detection and compensation stage.
  • An embodiment of the present application provides a compensation method for a display panel, including:
  • the position information of the first sub-pixel matches the position information of the abnormal sub-pixel in the target display panel, acquire the position information of the second sub-pixel corresponding to the first sub-pixel, the second sub-pixel Located in the same pixel unit as the first sub-pixel;
  • the step of obtaining the position information of the abnormal sub-pixel in the target display panel includes:
  • the position information of the abnormal sub-pixel is stored in the compensation device.
  • the step of acquiring the position information of the first sub-pixel in the target display panel further includes:
  • the pixels of the first sub-pixel voltage is compensated.
  • the step of setting the compensation parameter of the third sub-pixel as the compensation parameter of the second sub-pixel includes:
  • each of the pixel driving circuits corresponds to one of the sub-pixels, and the pixel driving circuit further includes a sensing thin film transistor;
  • the sensing thin film transistor in the sub-pixel and the sensing thin film transistor in another sub-pixel are both electrically connected to the same reference voltage signal.
  • the pixel driving circuit includes a switching thin film transistor, a driving thin film transistor, the sensing thin film transistor, an organic light emitting diode, and a storage capacitor;
  • the source of the switching thin film transistor is electrically connected to the data signal
  • the drain is electrically connected to the gate of the driving thin film transistor
  • the gate is electrically connected to the scanning signal
  • the source of the driving thin film transistor is electrically connected to a constant voltage high potential signal, and the drain is electrically connected to the first electrode of the organic light emitting diode and the drain of the sensing thin film transistor;
  • the source of the sensing thin film transistor is electrically connected to the reference voltage signal, and the gate is electrically connected to the sensing enable signal;
  • the second electrode of the organic light emitting diode is electrically connected to a constant voltage low potential signal
  • the first plate of the storage capacitor is electrically connected to the drain of the switching thin film transistor and the gate of the driving thin film transistor, and the second plate is electrically connected to the drain of the driving thin film transistor and the first gate of the organic light emitting diode. electrode.
  • the step of setting the compensation parameter of the third sub-pixel as the compensation parameter of the second sub-pixel it further includes:
  • Laser repair is performed on the area corresponding to the first sub-pixel, so that the first sub-pixel displays normally after pixel voltage compensation.
  • the embodiment of the present application also provides a compensation method for a display panel, including:
  • the position information of the first sub-pixel matches the position information of the abnormal sub-pixel in the target display panel, acquire the position information of the second sub-pixel corresponding to the first sub-pixel, the second sub-pixel Located in the same pixel unit as the first sub-pixel;
  • the step of acquiring the position information of the first sub-pixel in the target display panel further includes:
  • the pixels of the first sub-pixel voltage is compensated.
  • the step of setting the compensation parameter of the third sub-pixel as the compensation parameter of the second sub-pixel includes:
  • each of the pixel driving circuits corresponds to one of the sub-pixels, and the pixel driving circuit further includes a sensing thin film transistor;
  • the sensing thin film transistor in the sub-pixel and the sensing thin film transistor in another sub-pixel are both electrically connected to the same reference voltage signal.
  • the pixel driving circuit includes a switching thin film transistor, a driving thin film transistor, the sensing thin film transistor, an organic light emitting diode, and a storage capacitor;
  • the source of the switching thin film transistor is electrically connected to the data signal
  • the drain is electrically connected to the gate of the driving thin film transistor
  • the gate is electrically connected to the scanning signal
  • the source of the driving thin film transistor is electrically connected to a constant voltage high potential signal, and the drain is electrically connected to the first electrode of the organic light emitting diode and the drain of the sensing thin film transistor;
  • the source of the sensing thin film transistor is electrically connected to the reference voltage signal, and the gate is electrically connected to the sensing enable signal;
  • the second electrode of the organic light emitting diode is electrically connected to a constant voltage low potential signal
  • the first plate of the storage capacitor is electrically connected to the drain of the switching thin film transistor and the gate of the driving thin film transistor, and the second plate is electrically connected to the drain of the driving thin film transistor and the first gate of the organic light emitting diode. electrode.
  • the step of setting the compensation parameter of the third sub-pixel as the compensation parameter of the second sub-pixel it further includes:
  • Laser repair is performed on the area corresponding to the first sub-pixel, so that the first sub-pixel displays normally after pixel voltage compensation.
  • an embodiment of the present application also provides a compensation device, which is applied to a display panel, and the display panel includes a plurality of pixel units, and each of the pixel units includes a plurality of sub-pixels with different light emitting colors, wherein the compensation Devices include:
  • a first acquisition module configured to acquire position information of the display panel to be tested at a target position, where the position information includes target position information where the display panel displays abnormalities;
  • a judging module configured to judge whether the position information of the first sub-pixel in the target display panel matches the position information of the abnormal sub-pixel in the target display panel;
  • a second acquisition module configured to acquire position information of a second sub-pixel corresponding to the first sub-pixel when the position information of the first sub-pixel matches the position information of an abnormal sub-pixel in the target display panel , and the position information of the third sub-pixel corresponding to the second sub-pixel; wherein, the second sub-pixel and the first sub-pixel are in the same pixel unit, and the third sub-pixel and the The second sub-pixels are arranged adjacently and have the same emission color; and
  • a processing module configured to set the compensation parameter of the third sub-pixel as the compensation parameter of the second sub-pixel.
  • each of the sub-pixels includes a pixel driving circuit, and the pixel driving circuit further includes a sensing thin film transistor;
  • the sensing thin film transistor in the sub-pixel and the sensing thin film transistor in another sub-pixel are both electrically connected to the same reference voltage signal.
  • the pixel driving circuit includes a switching thin film transistor, a driving thin film transistor, the sensing thin film transistor, an organic light emitting diode, and a storage capacitor;
  • the source of the switching thin film transistor is electrically connected to the data signal
  • the drain is electrically connected to the gate of the driving thin film transistor
  • the gate is electrically connected to the scanning signal
  • the source of the driving thin film transistor is electrically connected to a constant voltage high potential signal, and the drain is electrically connected to the first electrode of the organic light emitting diode and the drain of the sensing thin film transistor;
  • the source of the sensing thin film transistor is electrically connected to the reference voltage signal, and the gate is electrically connected to the sensing enable signal;
  • the second electrode of the organic light emitting diode is electrically connected to a constant voltage low potential signal
  • the first plate of the storage capacitor is electrically connected to the drain of the switching thin film transistor and the gate of the driving thin film transistor, and the second plate is electrically connected to the drain of the driving thin film transistor and the first gate of the organic light emitting diode. electrode.
  • the second acquiring module is further used to acquire the second A compensation parameter of a sub-pixel.
  • the processing module is configured to compensate the pixel voltage of the third sub-pixel through the pixel driving circuit, obtain the compensation parameter of the third sub-pixel, and calculate the The compensation parameter of the third sub-pixel is set as the compensation parameter of the second sub-pixel.
  • the processing module is further configured to perform laser repair on the area corresponding to the first sub-pixel, so that the first sub-pixel displays normally after pixel voltage compensation.
  • Embodiments of the present application provide a compensation method and a compensation device for a display panel; the compensation method includes: first acquiring position information of a first sub-pixel in a target display panel, and the first sub-pixel is a sub-pixel to be compensated; when the When the position information of the first sub-pixel matches the position information of the abnormal sub-pixel in the target display panel, acquire the position information of the second sub-pixel corresponding to the first sub-pixel, and the second sub-pixel is identical to the abnormal sub-pixel The first sub-pixel is located in the same pixel unit; then, according to the position information of the second sub-pixel, obtain the position information of the third sub-pixel corresponding to the second sub-pixel, the third sub-pixel and the The second sub-pixels are adjacently arranged and have the same luminous color; finally, the compensation parameter of the third sub-pixel is set as the compensation parameter of the second sub-pixel; the compensation method of the above-mentioned display panel firstly determines the compensation parameter to be compensated Whether the pixel displays abnormal
  • FIG. 1 is a flowchart of a compensation method for a display panel provided in an embodiment of the present application
  • FIG. 2 is a schematic diagram of a pixel driving circuit of a display panel provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of pixel distribution in a display panel provided by an embodiment of the present application.
  • Fig. 4 is a structural block diagram of a compensation device according to an embodiment of the present application.
  • the embodiments of the present application aim at the technical problem of point defects of bright and dark connections formed in the current display panel during the voltage detection and compensation stage, and the embodiments of the present application can improve the above technical problems.
  • An embodiment of the present application provides a compensation method for a display panel, and the compensation method includes but is not limited to the following embodiments and combinations of the following embodiments.
  • FIG. 1 it is a flow chart of a compensation method for a display panel provided in an embodiment of the present application; the compensation method for a display panel includes but is not limited to the following steps.
  • the S10 also includes:
  • the target display panel is scanned; then, the pixel coordinates of the first sub-pixel in the target display panel are acquired, so as to obtain the position information of the first sub-pixel in the target display panel.
  • the display panel to be tested includes pixel units arranged in an array, each pixel unit includes a plurality of sub-pixels with different light emitting colors, and each of the sub-pixels is correspondingly connected to a pixel driving circuit, and the pixel driving circuit It is used for detecting and compensating the threshold voltage of the sub-pixel corresponding to it, so as to ensure that the luminance of each sub-pixel is the same.
  • the pixel driving circuit further includes a sensing thin film transistor; in the same pixel unit, the sensing thin film transistor in the sub-pixel is electrically connected to the sensing thin film transistor in another sub-pixel. connected to the same reference voltage signal; this is done to reduce line density.
  • the pixel unit includes a red sub-pixel, a green sub-pixel and a blue sub-pixel; or, the pixel unit includes a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel pixels.
  • the second The sub-pixel is located in the same pixel unit as the first sub-pixel.
  • the S20 also includes:
  • a test signal is input to the target display panel to light up each of the sub-pixels; then, the defect detection device is used to observe whether each pixel is good; when the defect detection device finds that a certain sub-pixel displays abnormally, obtain position information of the abnormal sub-pixel in the target display panel, and store the position information of the abnormal sub-pixel in the compensation device.
  • the abnormal display of the sub-pixel means that the sub-pixel displays a bright point or a dark point.
  • the pixel driving circuit normally detects and compensates the threshold voltage of the driving thin film transistor in the first sub-pixel, so that the brightness of the first sub-pixel is different from that of other normally light-emitting sub-pixels. Brightness is the same.
  • the position information of the second sub-pixel acquire the position information of a third sub-pixel corresponding to the second sub-pixel, where the third sub-pixel is arranged adjacent to the second sub-pixel and emits light of a color same.
  • the S30 also includes:
  • the position information of the third sub-pixel corresponding to the second sub-pixel is directly obtained, and the third sub-pixel is arranged adjacent to the second sub-pixel and emits light. Same color.
  • the S40 also includes:
  • the pixel drive circuit corresponding to the third sub-pixel normally detects and compensates the threshold voltage of the driving thin film transistor in the third sub-pixel, so that the driving thin film transistor in the third sub-pixel
  • the threshold voltage compensation value is the threshold voltage compensation value of the third sub-pixel.
  • the compensation device directly sets the compensation parameter of the third sub-pixel as the compensation parameter of the second sub-pixel through a compensation algorithm.
  • the second sub-pixel Since the first sub-pixel is a sub-pixel with abnormal display, the second sub-pixel which is the same pixel unit as the first sub-pixel shares the detection and compensation circuit with the first sub-pixel, which will cause the
  • the threshold voltage compensation value of the driving thin film transistor in the second sub-pixel becomes larger or smaller, thereby making the second sub-pixel brighter or darker;
  • the threshold voltage compensation value of the driving thin film transistor in the third sub-pixel remains unchanged, so as to avoid abnormal display of the second sub-pixel due to the process defect of the first sub-pixel, avoiding the increase of module repair and Compensation capacity.
  • the step of setting the compensation parameter of the third sub-pixel as the compensation parameter of the second sub-pixel further includes:
  • Laser repair is performed on the area corresponding to the first sub-pixel, so that the first sub-pixel displays normally after pixel voltage compensation.
  • the threshold voltage of the driving thin film transistor corresponding to the first sub-pixel is compensated again, so that the compensated luminance value of the first sub-pixel is consistent with the compensated luminance values of other sub-pixels.
  • an embodiment of the present application provides a compensation method for a display panel.
  • the compensation method includes: first obtaining the first sub-pixel in the target display panel The position information of the first sub-pixel is the sub-pixel to be compensated; when the position information of the first sub-pixel matches the position information of the abnormal sub-pixel in the target display panel, acquire the The position information of the corresponding second sub-pixel, the second sub-pixel and the first sub-pixel are located in the same pixel unit; then, according to the position information of the second sub-pixel, obtain the The position information of the corresponding third sub-pixel, the third sub-pixel is adjacent to the second sub-pixel and has the same emission color; finally, the compensation parameter of the third sub-pixel is set as the first Compensation parameters of two sub-pixels; the compensation method of the above-mentioned display panel first determines whether the display of the pixel to be compensated is abnormal, and when the display of the pixel to
  • FIG. 2 it is a schematic diagram of a pixel driving circuit of a display panel provided by an embodiment of the present application; wherein, each sub-pixel corresponds to one pixel driving circuit, and in the same pixel unit, all the pixel driving circuits in the sub-pixel
  • the sensing thin film transistor and the sensing thin film transistor in another sub-pixel are both electrically connected to the same reference voltage signal (Vref).
  • the pixel driving circuit includes a switching thin film transistor (Scan TFT), a driving thin film transistor (Drive TFT), the sensing thin film transistor (Sense TFT), an organic light emitting diode (OLED) and a storage capacitor (Cst);
  • Scan TFT switching thin film transistor
  • Drive TFT driving thin film transistor
  • Sense TFT sensing thin film transistor
  • OLED organic light emitting diode
  • Cst storage capacitor
  • the source of the switching thin film transistor is electrically connected to any one of the red sub-pixel data signal Data (R), the green sub-pixel data signal Data (G) and the blue sub-pixel data signal Data (B). kind, the drain is electrically connected to the drive thin film transistor (Drive The gate of TFT), the gate is electrically connected to the scan signal;
  • the source of the driving thin film transistor is electrically connected to the constant voltage high potential signal (VDD), and the drain is electrically connected to the first electrode of the organic light emitting diode (OLED) and the sensing thin film transistor (Sense TFT) drain;
  • the source of the sensing thin film transistor is electrically connected to the reference voltage signal (Vref), and the gate is electrically connected to the sensing enable signal;
  • the second electrode of the organic light emitting diode is electrically connected to a constant voltage low potential signal (VSS);
  • the first plate of the storage capacitor (Cst) is electrically connected to the drain of the switching thin film transistor (Scan TFT) and the gate of the driving thin film transistor (Drive TFT), and the second plate is electrically connected to the driving thin film transistor ( drive TFT) and the first electrode of the organic light emitting diode (VDD).
  • the drive thin film transistor (Drive The short circuit between the gate and the drain of the TFT will cause the detection threshold voltage of other sub-pixels in the same pixel unit as the Drive TFT to be higher.
  • the threshold voltage detected by the driving thin film transistor (Drive TFT) of other sub-pixels located in the same pixel unit is relatively low.
  • the first electrode and the second electrode of the organic light-emitting diode (OLED) in the pixel driving circuit corresponding to a certain sub-pixel are short-circuited, it will cause other sub-pixels in the same pixel unit to The threshold voltage detected by the drive TFT of the sub-pixel is relatively low.
  • FIG. 3 it is a schematic diagram of pixel distribution in a display panel provided by an embodiment of the present application; wherein, the pixel unit includes a sub-pixel A, a sub-pixel B, and a sub-pixel C, and the sub-pixel A, the sub-pixel B and the sub-pixels C have different light emitting colors; sub-pixel E and sub-pixel F are adjacent to the sub-pixel B and have the same light emitting color, and sub-pixel G and sub-pixel H are adjacent to the sub-pixel C and emit light Same color.
  • the defect of the sub-pixel A causes the pixel driving circuit to
  • the detected threshold voltage value of the driving thin film transistor in the sub-pixel B or the sub-pixel C is relatively high or low, so that the sub-pixel B or the sub-pixel C may change after the threshold voltage compensation of the module.
  • the sub-pixel B can borrow the compensation parameters of the sub-pixel E or the sub-pixel F
  • the sub-pixel C can borrow the compensation parameters of the sub-pixel G or the sub-pixel H, so as to avoid this kind of influence.
  • FIG. 4 it is a structural block diagram of a compensation device according to an embodiment of the present application.
  • the embodiment of the present application provides a compensation device 400, which is applied to a display panel, and the display panel includes a plurality of pixel units, and each pixel unit includes a plurality of sub-pixels with different light emitting colors; wherein, the compensation device include:
  • the first acquisition module 401 is configured to acquire position information of the display panel to be tested at a target position, where the position information includes target position information where the display panel displays abnormalities;
  • a judging module 402 configured to judge whether the position information of the first sub-pixel in the target display panel matches the position information of the abnormal sub-pixel in the target display panel;
  • the second acquiring module 403 is configured to acquire the position of the second sub-pixel corresponding to the first sub-pixel when the position information of the first sub-pixel matches the position information of the abnormal sub-pixel in the target display panel information, and position information of a third sub-pixel corresponding to the second sub-pixel; wherein, the second sub-pixel is in the same pixel unit as the first sub-pixel, and the third sub-pixel is in the same pixel unit as the first sub-pixel.
  • the second sub-pixels are arranged adjacently and have the same emission color; and
  • the processing module 404 is configured to set the compensation parameter of the third sub-pixel as the compensation parameter of the second sub-pixel.
  • the first acquisition module 401 is further configured to scan the target display panel to acquire pixel coordinates of the first sub-pixel in the target display panel, so as to obtain position information of the first sub-pixel in the target display panel.
  • the second acquisition module 403 is also used to perform lighting detection on the target display panel; determine the position information of the abnormal sub-pixel corresponding to the abnormal display of the target display panel; The position information of the sub-pixel is stored in the compensation device.
  • the pixel voltage of the first sub-pixel is compensated.
  • the processing module 404 is used to compensate the pixel voltage of the third sub-pixel through the pixel driving circuit to obtain the compensation parameter of the third sub-pixel; after that, the third sub-pixel The compensation parameter of the pixel is set as the compensation parameter of the second sub-pixel.
  • each of the pixel driving circuits corresponds to one of the sub-pixels, and the pixel driving circuit further includes a sensing thin film transistor;
  • the sensing thin film transistor in the sub-pixel and the sensing thin film transistor in another sub-pixel are both electrically connected to the same reference voltage signal.
  • Embodiments of the present application provide a compensation method and a compensation device for a display panel; the compensation method includes: first acquiring position information of a first sub-pixel in a target display panel, and the first sub-pixel is a sub-pixel to be compensated; when the When the position information of the first sub-pixel matches the position information of the abnormal sub-pixel in the target display panel, acquire the position information of the second sub-pixel corresponding to the first sub-pixel, and the second sub-pixel is identical to the abnormal sub-pixel The first sub-pixel is located in the same pixel unit; then, according to the position information of the second sub-pixel, obtain the position information of the third sub-pixel corresponding to the second sub-pixel, the third sub-pixel and the The second sub-pixels are adjacently arranged and have the same luminous color; finally, the compensation parameter of the third sub-pixel is set as the compensation parameter of the second sub-pixel; the compensation method of the above-mentioned display panel firstly determines the compensation parameter to be compensated Whether the pixel displays abnormal

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Abstract

一种显示面板（100）的补偿方法，包括：获取第一子二像素的位置信息，第一子像素为待补偿子像素（S10）；当第一子像素的位置信息和异常子像素的位置信息匹配时，获取与第一子像素对应的第二子像素的位置信息，第二子像素与第一子像素位于同一像素单元内（S20）；根据第二子像素的位置信息，获取与第二子像素对应的第三子像素的位置信息，第三子像素与第二子像素相邻设置且发光颜色相同（S30）；将第三子像素的补偿参数设定为第二子像素的补偿参数（S40）。

Description

显示面板的补偿方法及补偿装置 技术领域
本申请涉及显示技术领域，具体涉及一种显示面板的补偿方法及补偿装置。
 背景技术
与液晶显示器(Liquid Crystal Display，简称LCD)利用稳定的电压控制亮度不同，有机发光二极管(Organic Light-Emitting Diode，简称OLED)属于电流驱动，需要稳定的电流来控制器发光。一般OLED显示器通过每个像素中的像素驱动电路中的驱动晶体管向OLED输出电流，以驱动OLED发光。由于OLED显示器中的驱动晶体管的电学特性不一致，因此，像素单元之间存在亮度差异。为了保证因驱动晶体管的电学特性不一致造成的亮度不一致性的技术问题，现有技术提出了外部补偿方式，通过对每个子像素对应的驱动晶体管的阈值电压进行补偿，生成校正后的驱动电压，以保证OLED显示器所显示内容的一致性。
为减少线路密度，多个发光颜色不同的子像素共用一组侦测补偿线路。当某个子像素因薄膜晶体管制程或有机发光层制程产生缺陷时，会影响共用侦测线路的周边子像素的阈值电压的侦测，导致周边像素经过模组侦测补偿后会变成亮点或者暗点，从而形成亮暗连接的点缺陷，超过客户接受标准，必须进行镭射修补后再次补偿，非常浪费模组修补及补偿产能，影响模组直通率。
因此，亟需一种显示面板的补偿方法及补偿装置以解决上述技术问题。
 技术问题
当前显示面板在电压侦测补偿阶段存在形成亮暗连接的点缺陷的技术问题。
 技术解决方案
本申请实施例提供一种显示面板的补偿方法，包括：
获取目标显示面板中第一子像素的位置信息，所述第一子像素为待补偿子像素；
当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息匹配时，获取与所述第一子像素对应的第二子像素的位置信息，所述第二子像素与所述第一子像素位于同一像素单元内；
根据所述第二子像素的位置信息，获取与所述第二子像素对应的第三子像素的位置信息，所述第三子像素与所述第二子像素相邻设置且发光颜色相同；
将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数；
其中，获取所述目标显示面板中异常子像素的位置信息的步骤包括：
对所述目标显示面板进行点灯检测；
确定所述目标显示面板在显示异常时对应的异常子像素的位置信息；
将所述异常子像素的位置信息存储至补偿装置中。
在本申请实施例提供的显示面板的补偿方法中，所述获取目标显示面板中第一子像素的位置信息的步骤还包括：
扫描所述目标显示面板；
获取所述目标显示面板中第一子像素的像素坐标，以得到所述目标显示面板中第一子像素的位置信息。
在本申请实施例提供的显示面板的补偿方法中，当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息不匹配时，对所述第一子像素的像素电压进行补偿。
在本申请实施例提供的显示面板的补偿方法中，所述将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数的步骤包括：
通过像素驱动电路对所述第三子像素的像素电压进行补偿，得到所述第三子像素的补偿参数；
将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数。
在本申请实施例提供的显示面板的补偿方法中，每一个所述像素驱动电路对应一个所述子像素，所述像素驱动电路还包括一个感应薄膜晶体管；
其中，在同一所述像素单元内，所述子像素内的所述感应薄膜晶体管与另一个所述子像素内的所述感应薄膜晶体管均电性连接至同一参考电压信号。
在本申请实施例提供的显示面板的补偿方法中，所述像素驱动电路包括开关薄膜晶体管、驱动薄膜晶体管、所述感应薄膜晶体管、有机发光二极管以及存储电容；
其中，所述开关薄膜晶体管的源极电连接数据信号，漏极电连接所述驱动薄膜晶体管的栅极，栅极电连接扫描信号；
所述驱动薄膜晶体管的源极电连接恒压高电位信号，漏极电连接所述有机发光二极管的第一电极以及所述感应薄膜晶体管的漏极；
所述感应薄膜晶体管的源极电连接所述参考电压信号，栅极电连接感应使能信号；
所述有机发光二极管的第二电极电连接恒压低电位信号；
所述存储电容的第一板电连接所述开关薄膜晶体管的漏极以及所述驱动薄膜晶体管的栅极，第二板电连接所述驱动薄膜晶体管的漏极以及所述有机发光二极管的第一电极。
在本申请实施例提供的显示面板的补偿方法中，所述将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数的步骤之后还包括：
对所述第一子像素对应的区域进行镭射修补，使得所述第一子像素经过像素电压补偿后显示正常。
相应地，本申请实施例还提供一种显示面板的补偿方法，包括：
获取目标显示面板中第一子像素的位置信息，所述第一子像素为待补偿子像素；
当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息匹配时，获取与所述第一子像素对应的第二子像素的位置信息，所述第二子像素与所述第一子像素位于同一像素单元内；
根据所述第二子像素的位置信息，获取与所述第二子像素对应的第三子像素的位置信息，所述第三子像素与所述第二子像素相邻设置且发光颜色相同；
将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数。
在本申请实施例提供的显示面板的补偿方法中，所述获取目标显示面板中第一子像素的位置信息的步骤还包括：
扫描所述目标显示面板；
获取所述目标显示面板中第一子像素的像素坐标，以得到所述目标显示面板中第一子像素的位置信息。
在本申请实施例提供的显示面板的补偿方法中，当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息不匹配时，对所述第一子像素的像素电压进行补偿。
在本申请实施例提供的显示面板的补偿方法中，所述将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数的步骤包括：
通过像素驱动电路对所述第三子像素的像素电压进行补偿，得到所述第三子像素的补偿参数；
将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数。
在本申请实施例提供的显示面板的补偿方法中，每一个所述像素驱动电路对应一个所述子像素，所述像素驱动电路还包括一个感应薄膜晶体管；
其中，在同一所述像素单元内，所述子像素内的所述感应薄膜晶体管与另一个所述子像素内的所述感应薄膜晶体管均电性连接至同一参考电压信号。
在本申请实施例提供的显示面板的补偿方法中，所述像素驱动电路包括开关薄膜晶体管、驱动薄膜晶体管、所述感应薄膜晶体管、有机发光二极管以及存储电容；
其中，所述开关薄膜晶体管的源极电连接数据信号，漏极电连接所述驱动薄膜晶体管的栅极，栅极电连接扫描信号；
所述驱动薄膜晶体管的源极电连接恒压高电位信号，漏极电连接所述有机发光二极管的第一电极以及所述感应薄膜晶体管的漏极；
所述感应薄膜晶体管的源极电连接所述参考电压信号，栅极电连接感应使能信号；
所述有机发光二极管的第二电极电连接恒压低电位信号；
所述存储电容的第一板电连接所述开关薄膜晶体管的漏极以及所述驱动薄膜晶体管的栅极，第二板电连接所述驱动薄膜晶体管的漏极以及所述有机发光二极管的第一电极。
在本申请实施例提供的显示面板的补偿方法中，所述将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数的步骤之后还包括：
对所述第一子像素对应的区域进行镭射修补，使得所述第一子像素经过像素电压补偿后显示正常。
相应地，本申请实施例还提供一种补偿装置，应用于显示面板，所述显示面板包括多个像素单元，每一个所述像素单元包括多个不同发光颜色的子像素，其中，所述补偿装置包括：
第一获取模块，用于获取待测显示面板在目标位置的位置信息，所述位置信息包括所述显示面板显示异常的目标位置信息；
判断模块，用于判断所述目标显示面板中的第一子像素的位置信息是否与所述目标显示面板中异常子像素的位置信息匹配；
第二获取模块，用于当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息匹配时，获取与所述第一子像素对应的第二子像素的位置信息，以及与所述第二子像素对应的第三子像素的位置信息；其中，所述第二子像素与所述第一子像素处于同一所述像素单元，所述第三子像素与所述第二子像素的相邻设置且发光颜色相同；以及
处理模块，用于将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数。
在本申请实施例提供的补偿装置中，每一个所述子像素包括一个像素驱动电路，所述像素驱动电路还包括一个感应薄膜晶体管；
其中，在同一所述像素单元内，所述子像素内的所述感应薄膜晶体管与另一个所述子像素内的所述感应薄膜晶体管均电性连接至同一参考电压信号。
在本申请实施例提供的补偿装置中，所述像素驱动电路包括开关薄膜晶体管、驱动薄膜晶体管、所述感应薄膜晶体管、有机发光二极管以及存储电容；
其中，所述开关薄膜晶体管的源极电连接数据信号，漏极电连接所述驱动薄膜晶体管的栅极，栅极电连接扫描信号；
所述驱动薄膜晶体管的源极电连接恒压高电位信号，漏极电连接所述有机发光二极管的第一电极以及所述感应薄膜晶体管的漏极；
所述感应薄膜晶体管的源极电连接所述参考电压信号，栅极电连接感应使能信号；
所述有机发光二极管的第二电极电连接恒压低电位信号；
所述存储电容的第一板电连接所述开关薄膜晶体管的漏极以及所述驱动薄膜晶体管的栅极，第二板电连接所述驱动薄膜晶体管的漏极以及所述有机发光二极管的第一电极。
在本申请实施例提供的补偿装置中，所述第二获取模块还用当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息不匹配时，获取所述第一子像素的补偿参数。
在本申请实施例提供的补偿装置中，所述处理模块用于通过所述像素驱动电路对所述第三子像素的像素电压进行补偿，得到所述第三子像素的补偿参数，并将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数。
在本申请实施例提供的补偿装置中，所述处理模块还用于对所述第一子像素对应的区域进行镭射修补，使得所述第一子像素经过像素电压补偿后显示正常。
 有益效果
本申请实施例提供一种显示面板的补偿方法及补偿装置；所述补偿方法包括：首先获取目标显示面板中第一子像素的位置信息，所述第一子像素为待补偿子像素；当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息匹配时，获取与所述第一子像素对应的第二子像素的位置信息，所述第二子像素与所述第一子像素位于同一像素单元内；之后，根据所述第二子像素的位置信息，获取与所述第二子像素对应的第三子像素的位置信息，所述第三子像素与所述第二子像素的相邻设置且发光颜色相同；最后，将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数；上述显示面板的补偿方法，首先确定待补偿像素是否显示异常，当待补偿像素显示异常时，将与所述待补偿像素处于同一像素单元的第二子像素的补偿参数设定为第三子像素经过补偿后的像素电压值，其中所述第三子像素与所述第二子像素相邻设置且发光颜色相同，从而避免所述第二子像素因所述待补偿像素发生缺陷而被补偿成亮点或暗点，进而优化显示模组制程流程，降低显示模组的修补及补偿产能，同时避免显示模组修补失败导致的不必要良率损失。
 附图说明
图1为本申请实施例提供的显示面板的补偿方法流程图；
图2为本申请实施例提供的显示面板的像素驱动电路示意图；
图3为本申请实施例提供的显示面板中像素分布示意图；
图4为本申请实施例的一种补偿装置的结构框图。
 本发明的实施方式
本申请实施例针对当前显示面板在电压侦测补偿阶段形成亮暗连接的点缺陷的技术问题，本申请实施例可以改善上述技术问题。
本申请实施例提供一种显示面板的补偿方法，所述补偿方法包括但不限于以下实施例以及以下实施例的组合。
在一实施例中，如图1所示，为本申请实施例提供的显示面板的补偿方法流程图；所述显示面板的补偿方法包括但不限于以下步骤。
S10，获取目标显示面板中第一子像素的位置信息，所述第一子像素为待补偿子像素。
具体地，所述S10还包括：
首先扫描所述目标显示面板；之后，获取所述目标显示面板中第一子像素的像素坐标，以得到所述目标显示面板中第一子像素的位置信息。
其中，所述待测显示面板包括呈阵列排布的像素单元，每个像素单元包括多个发光颜色不同的子像素，每一个所述子像素均对应连接一个像素驱动电路，所述像素驱动电路用于对与其对应的所述子像素的阈值电压进行侦测和补偿，用以保证每一个所述子像素的发光亮度相同。
具体地，所述像素驱动电路还包括一个感应薄膜晶体管；在同一所述像素单元内，所述子像素内的所述感应薄膜晶体管与另一个所述子像素内的所述感应薄膜晶体管均电性连接至同一参考电压信号；这样设置是为了减少线路密度。
进一步地，所述像素单元包括一个红色子像素、一个绿色子像素以及一个蓝色子像素；或者，所述像素单元包括一个红色子像素、一个绿色子像素、一个蓝色子像素以及一个白色子像素。
S20，当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息匹配时，获取与所述第一子像素对应的第二子像素的位置信息，所述第二子像素与所述第一子像素位于同一像素单元内。
具体地，所述S20还包括：
首先，对所述目标显示面板输入测试信号，使每一个所述子像素点亮；接着通过缺陷检测装置逐一观察各个像素是否良好；当所述缺陷检测装置发现某一个子像素显示异常时，获取所述目标显示面板中异常子像素的位置信息，并将所述异常子像素的位置信息存储至补偿装置中。其中，所述子像素显示异常是指所述子像素显示亮点或者显示暗点。
之后，将所述第一子像素的位置信息和所述补偿装置中异常子像素的位置信息进行对比；当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息匹配时，认定所述第一子像素即为异常子像素；此时获取与所述第一子像素对应的第二子像素的位置信息，所述第二子像素与所述第一子像素位于同一像素单元内。
进一步地，当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息不匹配时，认定所述第一子像素即为正常发光子像素；此时，所述第一子像素对应地所述像素驱动电路正常地对所述第一子像素中的驱动薄膜晶体管的阈值电压进行侦测和补偿，以使所述第一子像素的亮度与其他正常发光子像素的亮度相同。
S30，根据所述第二子像素的位置信息，获取与所述第二子像素对应的第三子像素的位置信息，所述第三子像素与所述第二子像素相邻设置且发光颜色相同。
具体地，所述S30还包括：
其中，根据所述第二子像素的位置信息，直接获取与所述第二子像素对应的第三子像素的位置信息，所述第三子像素与所述第二子像素相邻设置且发光颜色相同。
S40，将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数。
具体地，所述S40还包括：
首先，所述第三子像素对应地所述像素驱动电路正常地对所述第三子像素中的驱动薄膜晶体管的阈值电压进行侦测和补偿，得到所述第三子像素中的驱动薄膜晶体管的阈值电压补偿值，此阈值电压补偿值即为所述第三子像素的。之后，所述补偿装置通过补偿算法直接将第三子像素的补偿参数设定为所述第二子像素的补偿参数。
由于所述第一子像素为显示异常的子像素，与所述第一子像素为同一像素单元的所述第二子像素由于与所述第一子像素共用侦测补偿电路，会导致所述第二子像素中的驱动薄膜晶体管的阈值电压补偿值变大或变小，从而使得所述第二子像素变亮或者变暗；而此时，与所述第二子像素相邻且颜色相同的所述第三子像素中的驱动薄膜晶体管的阈值电压补偿值保持不变，从而能够避免所述第二子像素由于所述第一子像素的制程缺陷导致显示异常，避免增加模组修补及补偿产能。
在本申请的一些实施例中，所述将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数的步骤之后还包括：
对所述第一子像素对应的区域进行镭射修补，使得所述第一子像素经过像素电压补偿后显示正常。
由于所述第一子像素经过像素电压补偿后与其他子像素经过补偿后的亮度值仍然不一致，故需要对所述第一子像素对应的区域进行检测，发现缺陷后对该缺陷进行镭射修补；之后，重新对所述第一子像素对应的驱动薄膜晶体管的阈值电压进行补偿，使得所述第一子像素经过补偿后的亮度值与其他子像素经过补偿后的亮度值一致。
针对当前显示面板在电压侦测补偿阶段形成亮暗连接的点缺陷的技术问题，本申请实施例提供一种显示面板的补偿方法，所述补偿方法包括：首先获取目标显示面板中第一子像素的位置信息，所述第一子像素为待补偿子像素；当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息匹配时，获取与所述第一子像素对应的第二子像素的位置信息，所述第二子像素与所述第一子像素位于同一像素单元内；之后，根据所述第二子像素的位置信息，获取与所述第二子像素对应的第三子像素的位置信息，所述第三子像素与所述第二子像素的相邻设置且发光颜色相同；最后，将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数；上述显示面板的补偿方法，首先确定待补偿像素是否显示异常，当待补偿像素显示异常时，将与所述待补偿像素处于同一像素单元的第二子像素的补偿参数设定为第三子像素经过补偿后的像素电压值，其中所述第三子像素与所述第二子像素相邻设置且发光颜色相同，从而避免所述第二子像素因所述待补偿像素发生缺陷而被补偿成亮点或暗点，进而优化显示模组制程流程，降低显示模组的修补及补偿产能，同时避免显示模组修补失败导致的不必要良率损失。
如图2所示，为本申请实施例提供的显示面板的像素驱动电路示意图；其中，每一个子像素对应一个所述像素驱动电路，在同一所述像素单元内，所述子像素内的所述感应薄膜晶体管与另一个所述子像素内的所述感应薄膜晶体管均电性连接至同一参考电压信号(Vref)。
具体地，所述像素驱动电路包括开关薄膜晶体管(Scan TFT)、驱动薄膜晶体管(Drive TFT)、所述感应薄膜晶体管(Sense TFT)、有机发光二极管(OLED)以及存储电容(Cst)；
其中，所述开关薄膜晶体管(Scan TFT)的源极电连接红色子像素数据信号Data(R)、绿色子像素数据信号Data(G)以及蓝色子像素数据信号Data(B)中的任意一种，漏极电连接所述驱动薄膜晶体管(Drive TFT)的栅极，栅极电连接扫描信号；
所述驱动薄膜晶体管(Drive TFT)的源极电连接恒压高电位信号(VDD)，漏极电连接所述有机发光二极管(OLED)的第一电极以及所述感应薄膜晶体管(Sense TFT)的漏极；
所述感应薄膜晶体管(Sense TFT)的源极电连接所述参考电压信号(Vref)，栅极电连接感应使能信号；
所述有机发光二极管(OLED)的第二电极电连接恒压低电位信号(VSS)；
所述存储电容(Cst)的第一板电连接所述开关薄膜晶体管(Scan TFT)的漏极以及所述驱动薄膜晶体管(Drive TFT)的栅极，第二板电连接所述驱动薄膜晶体管(Drive TFT)的漏极以及所述有机发光二极管(VDD)的第一电极。
在本申请实施例中，若某一个子像素的驱动薄膜晶体管(Drive TFT)中的栅极与漏极短路，会导致与其处于同一所述像素单元的其他子像素的驱动薄膜晶体管(Drive TFT)侦测的阈值电压偏高。
在本申请实施例中，若某一个子像素对应的所述像素驱动电路中的驱动薄膜晶体管(Drive TFT)的栅极与源极短路且所述存储电容(Cst)的上下两板短路，会导致与其处于同一所述像素单元的其他子像素的驱动薄膜晶体管(Drive TFT)侦测的阈值电压偏低。
在本申请实施例中，若某一个子像素对应的所述像素驱动电路中的所述有机发光二极管(OLED)的第一电极与第二电极短路，会导致与其处于同一所述像素单元的其他子像素的驱动薄膜晶体管(Drive TFT)侦测的阈值电压偏低。
如图3所示，为本申请实施例提供的显示面板中像素分布示意图；其中，所述像素单元包括子像素A、子像素B以及子像素C，所述子像素A、所述子像素B以及所述子像素C的发光颜色均不相同；子像素E和子像素F为与所述子像素B相邻且发光颜色相同，子像素G和子像素H为与所述子像素C相邻且发光颜色相同。
具体地，当所述子像素A点灯为暗点时，由于所述子像素A、所述子像素B以及所述子像素C共用侦测补偿线路，所述子像素A的缺陷导致像素驱动电路侦测到的所述子像素B或所述子像素C中驱动薄膜晶体管的阈值电压值偏高或偏低，使得所述子像素B或所述子像素C可能在模组阈值电压补偿后变成亮点或暗点，增加了模组修补及补偿产能，以及增加了模组修补失败导致的不必要良率损失。此时，所述子像素B可以借用所述子像素E或者所述子像素F的补偿参数，所述子像素C可以借用所述子像素G或者所述子像素H的补偿参数,以避免这种影响。
相应地，如图4所示，为本申请实施例的一种补偿装置的结构框图。其中，本申请实施例提供一种补偿装置400，应用于显示面板，所述显示面板包括多个像素单元，每一个所述像素单元包括多个不同发光颜色的子像素；其中，所述补偿装置包括：
第一获取模块401，用于获取待测显示面板在目标位置的位置信息，所述位置信息包括所述显示面板显示异常的目标位置信息；
判断模块402，用于判断所述目标显示面板中的第一子像素的位置信息是否与所述目标显示面板中异常子像素的位置信息匹配；
第二获取模块403，用于当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息匹配时，获取与所述第一子像素对应的第二子像素的位置信息，以及与所述第二子像素对应的第三子像素的位置信息；其中，所述第二子像素与所述第一子像素处于同一所述像素单元，所述第三子像素与所述第二子像素的相邻设置且发光颜色相同；以及
处理模块404，用于将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数。
其中，所述第一获取模块401还用于扫描所述目标显示面板，获取所述目标显示面板中第一子像素的像素坐标，以得到所述目标显示面板中第一子像素的位置信息。
在本申请实施例中，所述第二获取模块403还用于对所述目标显示面板进行点灯检测；确定所述目标显示面板在显示异常时对应的异常子像素的位置信息；将所述异常子像素的位置信息存储至补偿装置中。
在本申请实施例中，当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息不匹配时，对所述第一子像素的像素电压进行补偿。
在本申请实施例中，所述处理模块404用于通过像素驱动电路对所述第三子像素的像素电压进行补偿，得到所述第三子像素的补偿参数；之后，将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数。
在本申请实施例中，每一个所述像素驱动电路对应一个所述子像素，所述像素驱动电路还包括一个感应薄膜晶体管；
其中，在同一所述像素单元内，所述子像素内的所述感应薄膜晶体管与另一个所述子像素内的所述感应薄膜晶体管均电性连接至同一参考电压信号。
本申请实施例提供一种显示面板的补偿方法及补偿装置；所述补偿方法包括：首先获取目标显示面板中第一子像素的位置信息，所述第一子像素为待补偿子像素；当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息匹配时，获取与所述第一子像素对应的第二子像素的位置信息，所述第二子像素与所述第一子像素位于同一像素单元内；之后，根据所述第二子像素的位置信息，获取与所述第二子像素对应的第三子像素的位置信息，所述第三子像素与所述第二子像素的相邻设置且发光颜色相同；最后，将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数；上述显示面板的补偿方法，首先确定待补偿像素是否显示异常，当待补偿像素显示异常时，将与所述待补偿像素处于同一像素单元的第二子像素的补偿参数设定为第三子像素经过补偿后的像素电压值，其中所述第三子像素与所述第二子像素相邻设置且发光颜色相同，从而避免所述第二子像素因所述待补偿像素发生缺陷而被补偿成亮点或暗点，进而优化显示模组制程流程，降低显示模组的修补及补偿产能，同时避免显示模组修补失败导致的不必要良率损失。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上对本申请实施例所提供的一种显示面板100及移动终端进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种显示面板的补偿方法，其中，包括：
    获取目标显示面板中第一子像素的位置信息，所述第一子像素为待补偿子像素；
    当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息匹配时，获取与所述第一子像素对应的第二子像素的位置信息，所述第二子像素与所述第一子像素位于同一像素单元内；
    根据所述第二子像素的位置信息，获取与所述第二子像素对应的第三子像素的位置信息，所述第三子像素与所述第二子像素相邻设置且发光颜色相同；
    将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数；
    其中，获取所述目标显示面板中异常子像素的位置信息的步骤包括：
    对所述目标显示面板进行点灯检测；
    确定所述目标显示面板在显示异常时对应的异常子像素的位置信息；
    将所述异常子像素的位置信息存储至补偿装置中。
  2. 根据权利要求1所述的显示面板的补偿方法，其中，所述获取目标显示面板中第一子像素的位置信息的步骤还包括：
    扫描所述目标显示面板；
    获取所述目标显示面板中第一子像素的像素坐标，以得到所述目标显示面板中第一子像素的位置信息。
  3. 根据权利要求1所述的显示面板的补偿方法，其中，当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息不匹配时，对所述第一子像素的像素电压进行补偿。
  4. 根据权利要求1所述的显示面板的补偿方法，其中，所述将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数的步骤包括：
    通过像素驱动电路对所述第三子像素的像素电压进行补偿，得到所述第三子像素的补偿参数；
    将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数。
  5. 根据权利要求4所述的显示面板的补偿方法，其中，每一个所述像素驱动电路对应一个所述子像素，所述像素驱动电路还包括一个感应薄膜晶体管；
    其中，在同一所述像素单元内，所述子像素内的所述感应薄膜晶体管与另一个所述子像素内的所述感应薄膜晶体管均电性连接至同一参考电压信号。
  6. 根据权利要求5所述的显示面板的补偿方法，其中，所述像素驱动电路包括开关薄膜晶体管、驱动薄膜晶体管、所述感应薄膜晶体管、有机发光二极管以及存储电容；
    其中，所述开关薄膜晶体管的源极电连接数据信号，漏极电连接所述驱动薄膜晶体管的栅极，栅极电连接扫描信号；
    所述驱动薄膜晶体管的源极电连接恒压高电位信号，漏极电连接所述有机发光二极管的第一电极以及所述感应薄膜晶体管的漏极；
    所述感应薄膜晶体管的源极电连接所述参考电压信号，栅极电连接感应使能信号；
    所述有机发光二极管的第二电极电连接恒压低电位信号；
    所述存储电容的第一板电连接所述开关薄膜晶体管的漏极以及所述驱动薄膜晶体管的栅极，第二板电连接所述驱动薄膜晶体管的漏极以及所述有机发光二极管的第一电极。
  7. 根据权利要求1所述的显示面板的补偿方法，其中，所述将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数的步骤之后还包括：
    对所述第一子像素对应的区域进行镭射修补，使得所述第一子像素经过像素电压补偿后显示正常。
  8. 一种显示面板的补偿方法，其中，包括：
    获取目标显示面板中第一子像素的位置信息，所述第一子像素为待补偿子像素；
    当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息匹配时，获取与所述第一子像素对应的第二子像素的位置信息，所述第二子像素与所述第一子像素位于同一像素单元内；
    根据所述第二子像素的位置信息，获取与所述第二子像素对应的第三子像素的位置信息，所述第三子像素与所述第二子像素相邻设置且发光颜色相同；
    将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数。
  9. 根据权利要求8所述的显示面板的补偿方法，其中，所述获取目标显示面板中第一子像素的位置信息的步骤还包括：
    扫描所述目标显示面板；
    获取所述目标显示面板中第一子像素的像素坐标，以得到所述目标显示面板中第一子像素的位置信息。
  10. 根据权利要求8所述的显示面板的补偿方法，其中，当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息不匹配时，对所述第一子像素的像素电压进行补偿。
  11. 根据权利要求8所述的显示面板的补偿方法，其中，所述将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数的步骤包括：
    通过像素驱动电路对所述第三子像素的像素电压进行补偿，得到所述第三子像素的补偿参数；
    将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数。
  12. 根据权利要求11所述的显示面板的补偿方法，其中，每一个所述像素驱动电路对应一个所述子像素，所述像素驱动电路还包括一个感应薄膜晶体管；
    其中，在同一所述像素单元内，所述子像素内的所述感应薄膜晶体管与另一个所述子像素内的所述感应薄膜晶体管均电性连接至同一参考电压信号。
  13. 根据权利要求12所述的显示面板的补偿方法，其中，所述像素驱动电路包括开关薄膜晶体管、驱动薄膜晶体管、所述感应薄膜晶体管、有机发光二极管以及存储电容；
    其中，所述开关薄膜晶体管的源极电连接数据信号，漏极电连接所述驱动薄膜晶体管的栅极，栅极电连接扫描信号；
    所述驱动薄膜晶体管的源极电连接恒压高电位信号，漏极电连接所述有机发光二极管的第一电极以及所述感应薄膜晶体管的漏极；
    所述感应薄膜晶体管的源极电连接所述参考电压信号，栅极电连接感应使能信号；
    所述有机发光二极管的第二电极电连接恒压低电位信号；
    所述存储电容的第一板电连接所述开关薄膜晶体管的漏极以及所述驱动薄膜晶体管的栅极，第二板电连接所述驱动薄膜晶体管的漏极以及所述有机发光二极管的第一电极。
  14. 根据权利要求8所述的显示面板的补偿方法，其中，所述将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数的步骤之后还包括：
    对所述第一子像素对应的区域进行镭射修补，使得所述第一子像素经过像素电压补偿后显示正常。
  15. 一种补偿装置，应用于显示面板，所述显示面板包括多个像素单元，每一个所述像素单元包括多个不同发光颜色的子像素，其中，所述补偿装置包括：
    第一获取模块，用于获取待测显示面板在目标位置的位置信息，所述位置信息包括所述显示面板显示异常的目标位置信息；
    判断模块，用于判断所述目标显示面板中的第一子像素的位置信息是否与所述目标显示面板中异常子像素的位置信息匹配；
    第二获取模块，用于当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息匹配时，获取与所述第一子像素对应的第二子像素的位置信息，以及与所述第二子像素对应的第三子像素的位置信息；其中，所述第二子像素与所述第一子像素处于同一所述像素单元，所述第三子像素与所述第二子像素的相邻设置且发光颜色相同；以及
    处理模块，用于将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数。
  16. 根据权利要求15所述的补偿装置，其中，每一个所述子像素包括一个像素驱动电路，所述像素驱动电路还包括一个感应薄膜晶体管；
    其中，在同一所述像素单元内，所述子像素内的所述感应薄膜晶体管与另一个所述子像素内的所述感应薄膜晶体管均电性连接至同一参考电压信号。
  17. 根据权利要求16所述的补偿装置，其中，所述像素驱动电路包括开关薄膜晶体管、驱动薄膜晶体管、所述感应薄膜晶体管、有机发光二极管以及存储电容；
    其中，所述开关薄膜晶体管的源极电连接数据信号，漏极电连接所述驱动薄膜晶体管的栅极，栅极电连接扫描信号；
    所述驱动薄膜晶体管的源极电连接恒压高电位信号，漏极电连接所述有机发光二极管的第一电极以及所述感应薄膜晶体管的漏极；
    所述感应薄膜晶体管的源极电连接所述参考电压信号，栅极电连接感应使能信号；
    所述有机发光二极管的第二电极电连接恒压低电位信号；
    所述存储电容的第一板电连接所述开关薄膜晶体管的漏极以及所述驱动薄膜晶体管的栅极，第二板电连接所述驱动薄膜晶体管的漏极以及所述有机发光二极管的第一电极。
  18. 根据权利要求15所述的补偿装置，其中，所述第二获取模块还用当所述第一子像素的位置信息和所述目标显示面板中异常子像素的位置信息不匹配时，获取所述第一子像素的补偿参数。
  19. 根据权利要求15所述的补偿装置，其中，所述处理模块用于通过所述像素驱动电路对所述第三子像素的像素电压进行补偿，得到所述第三子像素的补偿参数，并将所述第三子像素的补偿参数设定为所述第二子像素的补偿参数。
  20. 根据权利要求19所述的补偿装置，其中，所述处理模块还用于对所述第一子像素对应的区域进行镭射修补，使得所述第一子像素经过像素电压补偿后显示正常。
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